JP2005315131A - Throttle valve device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a fluid flow rate passing through clearance between its member, while constituting a flow passage opening-closing member in a noncontact state in full closure. <P>SOLUTION: This throttle valve device 1 is used in an intake air passage of an engine; and has a body 3 including a bore 2, two rotary valve plates 4 and 5 rotatably arranged in the body 3 by crossing the bore 2 and mutually arranged in parallel in a noncontact state, a first motor 6 and a second motor 7 for rotating the respective rotary valve plates 4 and 5. The two rotary valve plates 4 and 5 include throttle holes 4a and 5a capable of mutually overlapping by rotation. The overlapping area of the two throttle holes 4a and 5a is changed by relatively rotating the two rotary valve plates 4 and 5 for changing opening. While the two throttle holes 4a and 5a keep an apparent full closure state of becoming nonoverlapping, the two rotary valve plates 4 and 5 are mutually synchronously rotated. A speed of synchronous rotation is changed for further finely adjusting an air flow rate of the apparent full closure state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a throttle valve device used for adjusting a fluid flow rate such as an intake air flow rate of an engine, for example.

  Conventionally, as this type of device, for example, there is a throttle device used for adjusting the intake amount of an engine. A throttle device includes a throttle body including a bore through which air flows, a support shaft rotatably provided on the throttle body, and a disk-like throttle valve that is provided on the support shaft and opens and closes the bore by rotating together with the support shaft. With. When the throttle valve is fully closed, the throttle valve is configured not to come into mechanical contact with the bore wall surface in consideration of wear and deformation with the bore wall surface. Therefore, even if the throttle valve is fully closed, a slight clearance is formed between the outer peripheral surface and the bore wall surface, and thus the amount of air passing therethrough cannot be eliminated. For this reason, when the throttle valve is fully closed, it is required to reduce the clearance as much as possible and reduce the amount of air passing therethrough as much as possible in consideration of reduction in fuel consumption of the engine.

  In a throttle assembly described in Patent Document 1 below, a throttle valve is rotatably supported by a bore of a throttle body via a shaft. The throttle valve has a seal member provided so as to be able to contact the bore wall surface in the fully closed position in order to reduce the clearance between the outer peripheral surface and the bore wall surface. This seal member is formed of a plastically deformable material that is softer than the bore wall surface. With this configuration, when the throttle valve is fully closed, the seal member is deformed in accordance with the shape of the bore wall surface, and the clearance between the outer peripheral surface of the throttle valve and the bore wall surface is reduced.

  On the other hand, the throttling device described in Patent Document 2 below is configured so that the throttle valve is perpendicular to the bore axis in order to eliminate the variation in the air amount due to the variation in the fully closed angle when the throttle valve is fully closed. Be placed. In this arrangement state, the outer peripheral end surface of the throttle valve facing the bore wall surface has a spherical shape with a radius of curvature centering on the rotation center of the shaft. With this configuration, the clearance area between the bore wall surface and the outer peripheral end surface of the throttle valve is made constant even when the fully closed angle of the throttle valve varies.

JP-A-11-101137 (page 2-5, FIG. 1-4) Japanese Patent Laid-Open No. 2003-184583 (page 2-3, FIG. 3)

  However, in the throttle assembly described in Patent Document 1, the seal member has to be separately attached to the throttle valve, and the attachment accuracy is required. In addition, since the seal member comes into contact with the bore wall surface, there is a concern about deterioration of the seal member with time, wear, and contact noise.

  On the other hand, the throttling device described in Patent Document 2 described above reduces the amount of air passing through the clearance between the outer peripheral end surface of the throttle valve and the bore wall surface, although the variation in the air amount when the throttle valve is fully closed is eliminated. could not.

  The present invention has been made in view of the above circumstances, and an object of the invention is to make it possible to reduce the flow rate of fluid passing through the clearance between them while making the flow path opening / closing member non-contact when fully closed. It is to provide a valve device.

  In order to achieve the above object, a throttle valve device according to a first aspect of the present invention includes a body including a bore through which a fluid flows, and a body rotatably provided in a state of crossing the bore, and in parallel with each other in a non-contact state. The plurality of arranged rotary valve plates and the plurality of rotary valve plates include throttle holes that can be mutually overlapped by rotation, and are provided corresponding to each of the rotary valve plates to rotate each rotary valve plate. It is intended to provide a driving means.

  According to the configuration of the invention, by rotating each rotary valve plate relative to each other by each driving means, the overlapping area of the plurality of throttle holes is changed, the bore is opened and closed, and the flow rate of the fluid in the bore is adjusted. Here, by rotating each rotary valve plate relative to each other by each driving means, the plurality of throttle holes are in a non-overlapping state, and the bore is in an apparently fully closed state. Communicate with each other through clearance. In this state, while maintaining the state where the plurality of throttle holes do not overlap each other, the plurality of rotary valve plates are synchronously rotated by the respective driving means, so that the flow of the bore fluid in the apparent fully closed state is caused by shearing. Limited.

  In order to achieve the above object, a throttle valve device according to a second aspect of the present invention includes a body including a bore through which a fluid flows, and a body rotatably provided in a state of crossing the bore, and in parallel with each other in a non-contact state. The plurality of arranged rotary valve plates and the plurality of rotary valve plates include throttle holes that can be mutually overlapped by rotation, and are provided corresponding to each of the rotary valve plates to rotate each rotary valve plate. The present invention is provided with the drive means provided and the synchronization control means for controlling each drive means for synchronously rotating the plurality of rotary valve plates while keeping the plurality of throttle holes non-overlapping with each other.

  According to the configuration of the present invention, by making the plurality of throttle holes non-overlapping with each other, the bore is in an apparent fully closed state, but the throttle holes communicate with each other through the clearance of each rotary valve plate. Here, when the synchronous control means controls each driving means, the plurality of rotary valve plates are synchronously rotated while maintaining the non-overlapping state. This limits the fluid flow of the bore in the apparent fully closed state due to shear.

  In order to achieve the above object, an invention according to claim 3 includes a body including a bore through which a fluid flows, and a plurality of bodies arranged rotatably in the body so as to cross the bore and arranged in parallel without contacting each other. The rotary valve plate and the plurality of rotary valve plates include throttle holes that can be mutually overlapped by rotation, and driving means provided corresponding to each rotary valve plate for rotating each rotary valve plate And a synchronous control means for controlling each driving means for synchronously rotating the plurality of rotary valve plates while maintaining a state in which the plurality of throttle holes do not overlap each other, and each drive control for changing the speed of the synchronous rotation The shift control means for controlling the means is provided.

  According to the configuration of the present invention, by making the plurality of throttle holes non-overlapping with each other, the bore is in an apparent fully closed state, but the throttle holes communicate with each other through the clearance of each rotary valve plate. Here, when the synchronous control means controls each driving means, the plurality of rotary valve plates are synchronously rotated while maintaining the non-overlapping state. This limits the fluid flow of the bore in the apparent fully closed state due to shear. Further, when the speed change control means changes the speed of the synchronous rotation, the flow of the bore fluid in the apparent fully closed state is finely adjusted.

  In order to achieve the above object, a throttle valve device according to a fourth aspect of the present invention is the throttle valve device according to any one of the first to third aspects, in order to change the overlapping area of a plurality of throttle holes. The purpose is to provide an overlapping control means for controlling each driving means.

  According to the configuration of the invention described above, in addition to the operation of the invention according to any one of claims 1 to 3, the overlapping control means controls each driving means to relatively rotate each rotary valve plate, so that a plurality of throttles can be obtained. The overlapping area of the holes changes and the bore opens and closes to adjust the fluid flow rate in the bore.

  According to the first aspect of the present invention, the plurality of rotary valve plates are synchronously rotated while keeping the plurality of throttle holes non-overlapping with each other, so that the flow path opening / closing member in the fully closed state has a non-contact configuration. , The fluid flow rate through the clearance therebetween can be reduced.

  According to the second aspect of the present invention, the flow rate of the fluid passing through the clearance therebetween can be reduced while the flow path opening / closing member in the fully closed state is in a non-contact configuration.

  According to the third aspect of the present invention, the flow rate of the fluid passing through the clearance therebetween can be reduced while the non-contact configuration of the flow path opening / closing member when fully closed. Further, the adjustment range of the air flow rate can be expanded to the low flow rate range, and the resolution of the flow rate adjustment in the low flow rate range can be improved.

  According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the air flow rate can be adjusted from the low flow rate range to the high flow rate range.

[First Embodiment]
Hereinafter, a throttle valve device according to a first embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a longitudinal sectional view of a throttle valve device 1 of the present embodiment. FIG. 2 shows the throttle valve device 1 in a cross-sectional view. The throttle valve device 1 is attached to the intake passage of the engine and is used to adjust the amount of air taken into the engine. The throttle valve device 1 includes a body 3 that includes a bore 2 through which air as a fluid flows, and two rotations that are rotatably provided in the body 3 so as to cross the bore 2 and are arranged in parallel without being in contact with each other. Valve plates 4 and 5 (upper rotary valve plate 4 and lower rotary valve plate 5) and first rotary valves 4 and 5 are provided corresponding to the rotary valve plates 4 and 5 in order to rotate the rotary valve plates 4 and 5, respectively. A motor 6 and a second motor 7 are provided. 1 indicates the direction of air flow in the intake passage of the engine.

  In this embodiment, the interval between the two rotary valve plates 4 and 5 is set to “about 1 mm”. There is also a predetermined clearance between the rotary valve plates 4 and 5 and the body 3, which is in a non-contact state. Each of the rotary valve plates 4 and 5 includes throttle holes 4a and 5a that are arranged so as to be rotatable about the same axis and can overlap each other by their rotation. FIG. 3 is a plan view showing the shapes of the rotary valve plates 4 and 5 and the throttle holes 4a and 5a. Each throttle hole 4a, 5a has a semicircular arc shape. As shown in FIG. 1, the rotary valve plates 4 and 5 are rotatably supported by the body 3 via bearings 8, 9, and 10. Each rotary valve plate 4 and 5 has a plurality of outer peripheral teeth on the outer periphery. The first motor 6 provided in the body 3 is connected to the outer peripheral teeth of the upper rotary valve plate 4 via a drive gear 11 and intermediate gears 12 and 13 on the output shaft. Similarly, the second motor 7 provided in the body 3 is connected to the outer peripheral teeth of the lower rotary valve plate 5 via the drive gear 14 and the intermediate gears 15 and 16 on the output shaft.

  As shown in FIG. 1, a large number of protrusions 4 b are arranged at equiangular intervals on the upper surface periphery of the upper rotary valve plate 4. The body 3 is provided with a first rotation sensor 31 corresponding to the upper rotary valve plate 4. The rotation sensor 31 is disposed to face each protrusion 4b. The rotation sensor 31 detects the rotation speed of the upper rotary valve plate 4 by detecting the passage of each projection 4b as the upper rotary valve plate 4 rotates. Similarly, a large number of protrusions 5 b are arranged at equiangular intervals on the periphery of the lower surface of the lower rotary valve plate 5. The body 3 is provided with a second rotation sensor 32 corresponding to the lower rotary valve plate 5. The rotation sensor 32 is disposed to face each protrusion 5b. The rotation sensor 32 detects the rotation speed of the lower rotary valve plate 5 by detecting the passage of each projection 5b as the lower rotary valve plate 5 rotates.

  In the above-described configuration, the throttle valve device 1 rotates the rotary valve plates 4 and 5 relative to each other with the motors 6 and 7, thereby changing the overlapping area of the two throttle holes 4 a and 5 a, and opening and closing the bore 2. The air flow rate at 2 is adjusted. That is, as shown in FIGS. 1 and 2, in the non-overlapping state where the two throttle holes 4 a and 5 a do not overlap each other, the throttle valve device 1 is in an apparent fully closed state. In addition, as shown in FIG. 4, in the fully overlapped state where the two throttle holes 4a and 5a completely overlap each other, the throttle valve device 1 is fully opened. Further, the opening degree of the throttle valve device 1 can be changed by changing the overlapping area of the two throttle holes 4a and 5a between the apparent fully closed state and the fully open state. FIG. 5 is a graph showing the relationship between the opening degree of the throttle valve device 1 and the air flow rate. In this graph, the “relative rotation region” is a region where the opening degree and the air flow rate of the throttle valve device 1 are changed by changing the overlapping area of the two throttle holes 4a and 5a.

  In the apparent fully closed state described above, the throttle holes 4 a and 5 a communicate with each other through the clearances of the rotary valve plates 4 and 5. Therefore, in this state, air slightly flows through the clearance. Therefore, in this throttle valve device 1, the two rotary valve plates 4 and 5 are synchronously rotated by the motors 6 and 7 while maintaining the apparent fully closed state in which the two throttle holes 4a and 5a do not overlap each other. Thus, the air flow in the bore 2 in the apparent fully closed state is limited to a minute amount by shearing. It has been found that the minute air flow at this time is adjusted by changing the synchronous rotational speed of the two rotary valve plates 4 and 5. In the graph of FIG. 5, the “synchronous rotation region” is a region where the substantial opening degree and the air flow rate of the throttle valve device 1 are changed by changing the synchronous rotation speed of the two rotary valve plates 4 and 5. The curve portion indicated by the broken line ellipse in FIG. 5 is shown in the enlarged graph in FIG. As is apparent from this graph, it can be seen that the air flow rate in the throttle valve device 1 further decreases as the rotational speed of the two rotary valve plates 4 and 5 increases.

  FIG. 7 is a block diagram showing an electrical configuration related to the throttle valve device 1 in the engine system. In this embodiment, an electronic control unit (ECU) 30 for controlling the throttle valve device 1 is provided. A first motor 6 and a second motor 7 are connected to the ECU 30. The ECU 30 is connected to a first rotation sensor 31 and a second rotation sensor 32. The ECU 30 receives signals indicating the rotation speeds of the rotary valve plates 4 and 5 from the rotation sensors 31 and 32. Further, various signals are input to the ECU 30 from various sensors provided in the engine. That is, the pressure in the intake passage of the engine (intake pressure), the opening degree of the accelerator pedal (accelerator opening degree), the engine rotation speed, and the temperature of the cooling water temperature of the engine (cooling water temperature) are respectively input to the ECU 30. The ECU 30 controls the motors 6 and 7 based on the various signals described above to rotate and stop the two rotary valve plates 4 and 5 in order to control the opening degree of the throttle valve device 1.

  Here, the ECU 30 controls the motors 6 and 7 in order to change the overlapping area of the two throttle holes 4a and 5a. The ECU 30 performs this control mainly based on an accelerator opening signal. For example, when the accelerator opening indicates fully closed, in principle, the ECU 30 controls the motors 6 and 7 so that the throttle valve device 1 is in an apparently fully closed state, whereby two rotations are performed. The valve plates 4 and 5 are rotated relatively to bring the throttle holes 4a and 5a into a non-overlapping state. Further, as the accelerator opening increases, the ECU 30 controls the motors 6 and 7 so as to increase the opening of the throttle valve device 1 so as to relatively rotate the two rotary valve plates 4 and 5. The overlapping area of the throttle holes 4a and 5a is increased. The ECU 30 that executes such control corresponds to the overlap control means of the present invention.

  Further, the ECU 30 keeps the two throttle holes 4a and 5a non-overlapping with each other (apparent fully closed state) while rotating the two rotary valve plates 4 and 5 in synchronization with each of the motors 6 and 7. To control. The ECU 30 controls the motors 6 and 7 based on the rotation speed signals from the rotation sensors 31 and 32 so that the two rotary valve plates 4 and 5 rotate in synchronization with each other. The ECU 30 that executes such control corresponds to the synchronization control means of the present invention.

  Further, the ECU 30 controls the motors 6 and 7 in order to change the speed of the synchronous rotation related to the two rotary valve plates 4 and 5 described above. The ECU 30 performs this control mainly based on the engine speed and cooling water temperature signals and the rotation speed signals from the rotation sensors 31 and 32. For example, when the cooling water temperature is low during engine idle operation, the ECU 30 controls the motors 6 and 7 so that the engine rotation speed becomes a predetermined speed, thereby synchronizing the rotation speed of the two rotary valve plates 4 and 5. Is relatively low. Thereafter, as the engine warms up, the ECU 30 controls the motors 6 and 7 to relatively increase the synchronous rotational speed of the two rotary valve plates 4 and 5. The ECU 30 that executes such control corresponds to the shift control means of the present invention.

  According to the configuration of the throttle valve device 1 in the present embodiment described above, the bores 2 are apparently fully closed by making the two throttle holes 4a and 5a non-overlapping with each other, but each throttle hole 4a, 5a communicates with each other through the clearances of the rotary valve plates 4 and 5. Here, when the ECU 30 controls the motors 6 and 7, the two rotary valve plates 4 and 5 are synchronously rotated while maintaining the non-overlapping apparent fully closed state. As a result, the air flow in the bore 2 in the apparent fully closed state is limited to a minute amount by shearing. Therefore, when the throttle valve device 1 is fully closed, the two rotary valve plates 4 and 5 and the body 3 are not in contact with each other, but the clearance between the two rotary valve plates 4 and 5 is reduced. The air flow rate passing therethrough can be reduced.

  Further, according to the throttle valve device 1 of this embodiment, since the two rotary valve plates 4 and 5 and the body 3 are configured to be in non-contact with each other, wear of each of the components 3 to 5 and generation of contact noise are prevented. Can be prevented. For this reason, it is possible to improve the durability of each of the components 3 to 5 and, in turn, the durability of the throttle valve device 1 itself.

  Further, according to the throttle valve device 1 of this embodiment, the ECU 30 changes the synchronous rotational speed of the two rotary valve plates 4 and 5, thereby reducing the air flow rate in the bore 2 in the apparent fully closed state. Adjusted. For this reason, as the throttle valve device 1, the adjustment range of the air flow rate can be expanded to the low flow rate region, and the resolution of the flow rate adjustment in the low flow rate region can be improved. Such a flow rate adjusting function in the low flow rate region corresponds to a function of an idle speed control valve (ISCV) that finely adjusts the intake air flow rate when the engine is idling. That is, the throttle valve device 1 is a device having an ISCV function.

  Furthermore, according to the throttle valve device 1 of this embodiment, the ECU 30 controls the motors 6 and 7 to relatively rotate the rotary valve plates 4 and 5, so that the overlapping area of the two throttle holes 4a and 5a is increased. Instead, the bore 2 opens and closes and the air flow rate in the bore 2 is adjusted. For this reason, the air flow rate can be adjusted from the low flow rate range to the high flow rate range.

[Second Embodiment]
Next, a second embodiment that embodies the throttle valve device of the present invention will be described in detail with reference to the drawings.

  In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Hereinafter, different points will be mainly described.

  This embodiment differs from the first embodiment in terms of the number of rotary valve plates and drive means. FIG. 8 is a longitudinal sectional view of the throttle valve device 21 of this embodiment. FIG. 9 shows the throttle valve device 21 in a cross-sectional view. FIG. 10 is a plan view showing the shapes of the rotary valve plates 4, 5, 22 and the throttle holes 4a, 5a, 22a. FIG. 11 shows the throttle valve device 21 in a cross-sectional view. In this embodiment, the middle rotary valve plate 22 is disposed between the upper rotary valve plate 4 and the lower rotary valve plate 5, and a total of three rotary valve plates 4, 5, and 22 are provided. As shown in FIG. 10, the throttle holes 4a, 5a, 22a of the rotary valve plates 4, 5, 22 have a two-third arc shape. In addition, a third motor 23 serving as a driving unit and a driving gear 24 and intermediate gears 25 and 26 related to the third motor 23 are provided in the body 3 in correspondence with the middle rotary valve plate 22. Further, a third rotation sensor 33 is provided in the body 3 corresponding to the middle rotation valve plate 22. Corresponding to the third rotation sensor 33, a large number of outer peripheral teeth 22 b that also serve as protrusions detected by the sensor 33 are provided on the outer periphery of the middle rotary valve plate 22.

  In the above configuration, the throttle valve device 21 changes the overlapping area of the three throttle holes 4a, 5a, 22a by rotating the rotary valve plates 4, 5, 22 relative to each other with the motors 6, 7, 23, respectively. The bore 2 opens and closes and the air flow rate in the bore 2 is adjusted. That is, as shown in FIGS. 8 and 9, in a non-overlapping state in which the three throttle holes 4a, 5a, and 22a do not overlap each other, the throttle valve device 21 is in an apparent fully closed state. FIG. 12 is an exploded perspective view showing the difference in rotational position between the rotary valve plates 4, 5 and 22 in the apparent fully closed state. In addition, as shown in FIG. 11, in the fully overlapped state where the three throttle holes 4a, 5a, and 22a completely overlap each other, the throttle valve device 21 is fully opened. FIG. 13 is an exploded perspective view showing the difference in rotational position between the rotary valve plates 4, 5 and 22 in the fully opened state. Moreover, the opening degree of the throttle valve device 21 is adjusted by changing the overlapping area of the three throttle holes 4a, 5a, and 22a between the apparent fully closed state and the fully open state.

  As shown in FIG. 8, in the above-described apparently fully closed state, the throttle holes 4a, 5a, and 22a communicate with each other through the clearances of the rotary valve plates 4, 5, and 22, respectively. Therefore, in this state, air slightly flows through the clearance. Therefore, also in this throttle valve device 21, the three throttle valve 4a, 5a, 22a are maintained in an apparent fully closed state in which the three throttle holes 4a, 5a, 22a do not overlap with each other, and the three rotary valve plates 4, 5 are driven by the motors 6, 7, 23, respectively. , 22 are synchronously rotated so that the air flow in the bore 2 in the apparent fully closed state is limited to a minute amount by shearing.

  FIG. 14 is a block diagram showing an electrical configuration related to the throttle valve device 21. In this embodiment, the configuration is different from the block diagram of FIG. 7 in that the third motor 23 and the third rotation sensor 33 are connected to the ECU 30. A signal indicating the rotation speed of the middle rotary valve plate 22 is input from the third rotation sensor 33 to the ECU 30. The ECU 30 controls the motors 6, 7, and 23 based on the various signals described above to rotate and stop the three rotary valve plates 4, 5, and 22 in order to control the opening degree of the throttle valve device 21. . The content of the control is basically the same as that of the first embodiment.

  Therefore, in this embodiment, basically the same operational effects as in the first embodiment can be obtained. In addition, in this embodiment, the throttle holes 4a, 5a, and 22a of the rotary valve plates 4, 5, and 22 have a two-third arc shape, and therefore, as shown in FIG. Therefore, the opening area can be increased as compared with the semicircular opening shape of the first embodiment. For this reason, compared with the throttle valve apparatus 1 of 1st Embodiment, the air flow rate at the time of a full open can be increased.

  Note that the present invention is not limited to the above-described embodiments, and a part of the configuration can be changed as appropriate without departing from the spirit of the invention. For example, the number of rotary valve plates may be changed from two or three to four or five.

The longitudinal cross-sectional view which shows the throttle valve apparatus of 1st Embodiment. The cross-sectional view which shows a throttle valve apparatus. The top view which shows a rotary valve board. The cross-sectional view which shows a throttle valve apparatus. The graph which shows the relationship between an opening degree and an air flow rate. The graph which shows the relationship between a rotational speed and an air flow rate. The block diagram which shows an electrical structure. The longitudinal cross-sectional view which shows the throttle valve apparatus of 2nd Embodiment. The cross-sectional view which shows a throttle valve apparatus. The top view which shows a rotary valve board. The cross-sectional view which shows a throttle valve apparatus. The disassembled perspective view which shows the rotation position of each rotary valve plate at the time of full closure. The disassembled perspective view which shows the rotation position of each rotary valve plate at the time of a full open. The block diagram which shows an electrical structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Throttle valve device 2 Bore 3 Body 4 Upper rotary valve plate 4a Throttle hole 5 Lower rotary valve plate 5a Throttle hole 6 First motor (drive means)
7 Second motor (drive means)
21 Throttle valve device 22 Middle rotary valve plate 22a Throttle hole 23 Third motor (drive means)
30 ECU (synchronous control means, shift control means, overlap control means)

Claims (4)

A body containing a bore through which fluid flows;
A plurality of rotary valve plates provided rotatably in the body in a state of crossing the bore, and arranged in parallel without being in contact with each other;
The plurality of rotary valve plates include throttle holes that can be mutually overlapped by rotation;
A throttle valve device comprising drive means provided corresponding to each of the rotary valve plates for rotating the rotary valve plates. A body containing a bore through which fluid flows;
A plurality of rotary valve plates provided rotatably in the body in a state of crossing the bore, and arranged in parallel without being in contact with each other;
The plurality of rotary valve plates include throttle holes that can be mutually overlapped by rotation;
Drive means provided corresponding to each of the rotary valve plates to rotate the rotary valve plates;
A throttle valve device comprising: synchronization control means for controlling the drive means to synchronously rotate the plurality of rotary valve plates while maintaining the plurality of throttle holes in a non-overlapping state. A body containing a bore through which fluid flows;
A plurality of rotary valve plates that are rotatably provided on the body in a state of crossing the bore and are arranged in parallel without being in contact with each other;
The plurality of rotary valve plates include throttle holes that can be mutually overlapped by rotation;
Drive means provided corresponding to each of the rotary valve plates to rotate the rotary valve plates;
Synchronous control means for controlling each of the driving means to synchronously rotate the plurality of rotary valve plates while keeping the plurality of throttle holes non-overlapping with each other;
A throttle valve device comprising: a shift control unit that controls each of the drive control units in order to change the speed of the synchronous rotation. The throttle valve device according to any one of claims 1 to 3, further comprising an overlapping control unit that controls each of the driving units to change an overlapping area of the plurality of throttle holes.

Images